In 2006, city investigators found that Gregory Atkins, who is accused of sexually assaulting a Public School 87 student, had an inappropriate relationship with a student at Manhattan’s Middle School 322, including giving the boy a jockstrap. (Jefferson Siegel/for New York Daily News)

Outraged parents demanded to know on Monday why a teacher's aide with a history of inappropriate contact with a child was hired at an upper West Side school, where he allegedly sexually abused a student.